The UpTake: Since taking over at Yahoo, Marissa Mayer has been one busy woman. If this report from yesterday is true, having so much to do may finally be taking its toll.

Marissa Mayer, chief executive officer of Yahoo Inc., looks on at the Cannes Lions International Festival Of Creativity in Cannes, France, in June 2014. According to a report released yesterday, she may have fallen asleep during an important advertising meeting at the event.

An unnamed executive among those waiting for Mayer to speak at a private dinner for marketing executives from Mondelez International, MillerCoors and Chobani, said the group was kept waiting two hours, because she had fallen asleep, according to a Wall Street Journal report yesterday.

“If it were an investor meeting, a board meeting or a potential acquisition, I am sure she or someone from her team would have woken her up,” said the executive, according to the report. “It is another instance where she demonstrated that she doesn’t understand the value of clients, ad revenue or agencies.”

In January, Mayer fired her COO, Henrique de Castro, who was largely responsible for generating ad revenue. But according to a Forbes report, instead of replacing him, she was to personally take on the ad revenue duties.

In addition to the double duties with ad revenue, Mayer has captained the acquisition of nearly 40 companies, spending $1.2 billion in 2013 alone, according to an Exit Round report.

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Michael del Castillo is the technology and innovation reporter at Upstart Business Journal, a member of American City Business Journals. A graduate of Columbia University, his work has appeared in the New Yorker. He is also the cofounder of Literary Manhattan, a nonprofit dedicated to promoting Manhattan’s literary community and creating new ways to appreciate literature.